8236981 has 2 divisors, whose sum is σ = 8236982. Its totient is φ = 8236980.

The previous prime is 8236973. The next prime is 8236999. The reversal of 8236981 is 1896328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8236900 + 81 = 2870^2 + 9^2 .

It is a cyclic number.

It is not a de Polignac number, because 8236981 - 2³ = 8236973 is a prime.

It is a super-2 number, since 2×8236981² = 135695711988722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8236981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8236961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4118490 + 4118491.

It is an arithmetic number, because the mean of its divisors is an integer number (4118491).

Almost surely, 2^8236981 is an apocalyptic number.

It is an amenable number.

8236981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8236981 is an equidigital number, since it uses as much as digits as its factorization.

8236981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 8236981 is about 2870.0141114636. The cubic root of 8236981 is about 201.9556563774.

It can be divided in two parts, 82369 and 81, that multiplied together give a square (6671889 = 2583²).

The spelling of 8236981 in words is "eight million, two hundred thirty-six thousand, nine hundred eighty-one".